[CentOS] TCPWrappers + Sendmail = not working

Sean Carolan wrote:
>>  $ ldd /usr/sbin/sendmail.sendmail | grep wrap
>>         libwrap.so.0 => /usr/lib/libwrap.so.0 (0x00319000)
>>
>>  tcp_wrappers never sees the connection directly. sendmail handles it
>>  from start to end.
> 
> Thanks for this info.  I will set up an iptables rule to block this access.


I'm confused.  I'd expect the above symbol listing to show that sendmail 
is in fact using the libwrap library and it should be doing what the 
allow/deny files say.

Regardless, the simple way to tell sendmail what you want to permit is 
to use the /usr/mail/access file.

-- 
   Les Mikesell
    lesmikesell at gmail.com